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Finding the Fourth Proportional to 76,897.60, 106,052.41 and 50,030.30

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Solution

The fourth proportional to 76,897.60, 106,052.41 and 50,030.30 is: 68,998.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,897.60 : 106,052.41 = 50,030.30 : x
  2. Step 2: Convert to fraction form
    76,897.60/106,052.41 = 50,030.30/x
  3. Step 3: Cross multiply
    76,897.60x = 106,052.41 × 50,030.30
  4. Step 4: Simplify right side
    76,897.60x = 5,305,833,888.02
  5. Step 5: Solve for x
    x = 5,305,833,888.02/76,897.60
  6. Step 6: Final answer
    x = 68,998.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.